Also known as Powderhorn Park May Day, since that's where it's held. This was something absurd like their 32nd year, it doesn't seem to be mentioned blatantly on their web site.
Because I took so many pictures, I've grouped them into shots of random people and locations around the park, Minn-StF people (meaning, for this purpose, people I knew who came to hang out by the Minn-StF sign), and the Tree-of-Life ceremony itself.